Selector-relay.



A. B. KENDALL.

SELECTOR VRELAY. APPL|cATloN-mED MAY 2o. 1916.

1,253,194, atented Jan. 8, 1918.

L* I i E,

ATTORNEY i Number UNrrED STATES inairEi--ir` OFFICE..

LLEN B. KENDLL. 0Fl ELIZABETH, NEW JERSEY, AssIGNon 'ro HALL swrrcii a l siemir. co., A conponarion or MAINE. f

snLnc'ron-BELAY.

Patented Jan. 8, 1918.

Application led Hay 20, 1916. Serial No. 98,972.

To aZZ whom it may concern:

citizen of the United States, and aresident of the city of Elizabeth, county of Union, and State of New Jersey have invented a certain new and useful S which the following is a specification.

My present tive relay and is shown in use, controlling a signal system, in my prior application Serial 7 83,506, filed August 7th,1913, this application being a continuation in part of the above mentioned application.

It will be obvious that such a device as disclosed is susceptible to quite a variety of modifications without departing from the broad spirit of the invention, such as applying the device for the control of grade crossinkg bell, signals, tower annunciators or the li e..

I have alread described in my application Serial Numlier 783,506 the application of my relay to an absolute permissive lock signal system, and I will now proceed to describe how my invention may be employed to control, respectively, a crossing bell an a lwi i wag crossing signal of the normally close circuit type, at a railroad crossing where trains pass in both directions over the same track. With a relay of the interlocking type it was fundamentally impossible to use the relay for the normal control of the track signals, annunciators or the like, as well as the crossing signals, and it is the object of the present invention to overcome this diliiculty, allowing both armatures to .fully complete their strokez their operation, as well as rectifying various other defects in prior relays, as can be'seen by the following description and claims.

Figure 1, isa diagrammatical view of my selector relay arranged to control a normally .energized crossing signal.

Fig. 2. shows the various conditions of the selector contactswhen adjusted to control a normally closed signal circuit.

Fig. 3. shows the various conditions of the selector contacts when controlling a bell cirl cuit and Fig. 4. is a dagiammaticalview of my seelector-Relay, ofi

invention relates to a selecirrespective of the sequence ofV atez giving lector relay as arranged for the control of a crossing bell.

Referring ai Eig. i. two sections of track are represented at-l and 2 divided by insulated joints 3 and 4. Sources of energy 5 and 6 are bridged across the rails of the track sections in such a manner that they willcause the current to flow through the rails of sections, 1 and 2 respectively, thence through wires 7, 8 and 9, 10 to energize theirl respective magnets 11 and 12 of the se- -lector relay.

' Normally the magnets 11 and 12 will be energized and will therefore attract their respective armatures 13 and l14, which carry respectively the contact ngers 19, 44 and 20, 45 mounted on insulating blocks 46, 47, 48, and 49, keepin front contacts 15 and 16 closed and bac contacts 17 and 18 open, both contacts 19 and 20 also being open.

Contacts 15, 16, `17 and 18 correspond to the contacts on a neutral relay and it is obvious that these may be duplicated to any necessary extent for the control of circuits extraneous to the selected circuit such as d vstraight track circuit control for automatic railroad signals.

21 is the contact selector and is arranged to select between the closing of contacts 19 and 20, being constructed of a flexible support or sprin 22 rigidly held at its base by means of a c amp, 23 its upper end being free to move and carry an insulating block 24 formed with selectorpints, 25 and 26, and carrying contact springs -27 and 28 which are electrically common to supporting spring 22. 'J

The crossing si clear by means o energy from battery 30 passing through wire 31,'wire 32, contact 16,

' wire 33, contact 15, wire 34, wire 35, through signal 29 back to battery 30.

When a train enters track section 1 in the direction indicatedl by thearrow energy from battery 5 is shunted thereby denergizing magnet 11. This will allow armature 13 to fall by gravity and breaking the holding circuit to the crossing signal 29 and causing the same to operindication of the approach of a train.` In the meantime, contact 19 has al 29 is normally held ,Y

opening front contact 15 C l i g wheels of the train pass the insulated )omts l 4, and 3, when the magnet 12 becomes de-I the completion of bythe back contacts 17.

fallen upon the inner-slopin face of selector point 25 as shown at 36 in ig. 2. and contact selector 21 has therefore, been moved over as shown a ainst the action of .its

spring 22, but it will be noticed that Athe 'ac' tion of the selector in no way interferes with the stroke of the armature solely l1m1ted 'mail theY freni 13, the movement of which is This condition pertains energized in the same manner as magnet 11.`

This allows armature 14 to drop, opening' front contact 16. 0n account 'or the pre,- vious movement of contact selector 21, con tact 20 will, now fall on the outside of selector point 26 and will slide down underconf 'f tact spring 28 as shown at 37 in 2. J-

When the train has completely passed into track section 2 magnet ll willA again become energized and pick u its armature 13 closing front Acontact 15 an r. lifting contact lll `to its original position. A. circuit will now be closed from battery 30, through wire 3l,

contact 20, contact spring 28, spring 22,-wire 38, wire 33, contact l5, wire 34:, -wire through signal 29, #bach to battery 30. Y' This will energ1ze the signal 29 and clear the same. Atterthe ,train has nallyleft track section 2, la` en et l2 will again be enen gized, picking upits aature lla, closing position. @bviously this sequence ont operationsiwill front contact 16, lifting. contact 2ll'to its original position and allowing contact se#V lectorI 2l to assume its central positiom'all' annaratus havingnow assumed its normal be identical whichever direction the train contact points 19 and 20 in the foregoing feo nal except tor a .slight"variation in the circuits which operate the bell.

ln this case it is not essential to useany 4'other contacts than thel selected contacts, tor the bell control,` which therefore leaves all are adjusted to he normally just inside the selector points 25 and 26 so that the hrst contact to drop will tall on the inside orn the selector point VThe only necessary change in the Irelay to control a 'bell is to so adjust the contact points that they are just outside`the selector points 25 and 26, as shown in Fig. l in order that the'rst one to drop will fall, on the outside ot the selector point.

The operation of the relay for the control f of -a bell is very fnuch the same as for a sigthe `independent iront and bach contacts ot Vthe two sides ot the relay free, for the control' ot signals or other purposes.

When'the train enters track section l, llig. l relay magnet ll is denergized allowing armature l3A to fall.. Contact@ 3. 'ln a relay, in

down the outside of selector point 25 and 65 I 4track section lvarmature 13 will be restored thereby lifting contact 19 and opening the bell ringing circuit.

Thus, it will -be seen that with the present relay 'selector contacts for the control of crossing bells," etc., may be controlled, in

conjunction with'the normal automatic signal control circuits in such a manner that each set of circuits will operate in its own individual manner and entirely separately distinct from the other set of circuits.

.il do not wish to be restricted to the spe.

Vcitic constrictions shown and described, as v this is only 'one of many methods of constructingA my apparatus without departing from the'spirit or my invention.

lVhatV l claim as new, and desire to se cure byLetters Patent ot the United States, 1s

' l. 'A relay comprising two electromagnets,

Aan .armature controlled by each electromag net, va circuit controller governed jointly by l said armatures, and other circuit controlling lll@ devices governed by said armatures sepa- .rately v is traveling. llt will be observed that the 2. ln a relay, in combination: two electromagnets, an armature controlled by each electromagnet, a circuit controllerV governed. by saidl armatures and capable of being closed by either oi' said armatures, the o eration of said circuit controller to its c oecdf condition by either one of said armatures renderingsaid circuit controller incapable of being closed by the other armature and other c1rcuit controlling devices governed by said armatures.

combination: two electro'- magnets, an armature controlled by each electromagnet, a contact attached to 4each armatureand insulated therefrom, a movof said. armatures drops, lthe dropping of either of said armatures causing said movable contact to move out of the path of the `other contact, and other circuit controlling devices governed by said armatures.

' Il. A. relay comprising two electromagnets, an armature controlled by each electromagnet, a contact attached to each armature and lll , able contact arranged to coact with either of sa1d first mentioned contacts when either insulated therefrom, a`movab1e cont-act member arranged to coact with either of said first mentioned contacts, and resilient means for conducting current to said movable con.

movable contact `arranged. to coact with either of said first mentloned contacts when either of said armatures drops, the dropping of either of said armatures moving said movable contact out of the path of the contact on the other armature.

6. .In a relay, in combination: two electromagnets,y an armature controlled by each electromagnet, a contact attached to each armature' and insulated therefrom, a movable contact arranged to coact in accordance with the sequence of operation of the armav tures with elther of said first mentioned consaid movable contact to move relative to the path of the other contact, and other circuit controlling devices governed by said armatures.

7. A relay comprising two electromagnets, an armature, controlled by each electromagnet a member of insulating material attached to each amature, a contact secured to the lower face of each member, and a movable contact arranged to coact in ac' cordanceA with the sequence of the operation of the armatures with either of .said first mentioned contacts when said armatures drop, the dropping of either of said armatures moving said movable contact relative to thefpath of the contact on the other armature and other circuit controlling devices, controlled by said armatures, which are operative irrespective of the sequence of operation of the armatures.

In testimony whereof, I have signed my name to this specification.'

ALLEN B. KENDALL. Witnessesz WALTER J. THAYER, H. C. FREY.' 

